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From: Johannes Berg <johannes@sipsolutions.net>
To: Michal Kazior <michal.kazior@tieto.com>
Cc: linux-wireless@vger.kernel.org
Subject: Re: [PATCH 1/2] cfg80211: ignore netif running state when changing iftype
Date: Wed, 20 May 2015 15:19:50 +0200	[thread overview]
Message-ID: <1432127990.19214.14.camel@sipsolutions.net> (raw)
In-Reply-To: <1432127874.19214.13.camel@sipsolutions.net> (sfid-20150520_151808_644260_5B1376EA)

On Wed, 2015-05-20 at 15:17 +0200, Johannes Berg wrote:

> > -	if (ntype != otype && netif_running(dev)) {
> > +	if (ntype != otype) {
> >  		dev->ieee80211_ptr->use_4addr = false;
> >  		dev->ieee80211_ptr->mesh_id_up_len = 0;
> >  		wdev_lock(dev->ieee80211_ptr);
> 
> I don't think that makes much sense - the code within this block really
> only makes sense when the interface *is* running, like disconnecting
> etc. Doing that when it's *not* would be entirely unexpected to the
> drivers, no?

The real problem here might be the assignment to use_4addr *before*
we've actually disconnected or anything, perhaps that should be moved?

Similarly, the mesh_id_up_len should probably be moved into the mesh
point switch case...

johannes


  reply	other threads:[~2015-05-20 13:19 UTC|newest]

Thread overview: 14+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-05-19 12:37 [PATCH 1/2] cfg80211: ignore netif running state when changing iftype Michal Kazior
2015-05-19 12:37 ` [PATCH 2/2] mac80211: guard against invalid ptr deref Michal Kazior
2015-05-20 13:23   ` Johannes Berg
2015-05-20 13:17 ` [PATCH 1/2] cfg80211: ignore netif running state when changing iftype Johannes Berg
2015-05-20 13:19   ` Johannes Berg [this message]
2015-05-21  7:44     ` Michal Kazior
2015-05-22  8:34       ` Johannes Berg
2015-05-22  8:57 ` [PATCH v2 " Michal Kazior
2015-05-22  8:57   ` [PATCH v2 2/2] mac80211: guard against invalid ptr deref Michal Kazior
2015-05-29 11:10     ` Johannes Berg
2015-05-29 11:34       ` Michal Kazior
2015-05-29 11:39         ` Johannes Berg
2015-05-29 11:48           ` Michal Kazior
2015-05-29 11:07   ` [PATCH v2 1/2] cfg80211: ignore netif running state when changing iftype Johannes Berg

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